what is one of the causes of mechanical weathering?\no acid rain\no oxidation\no animal actions\no carbon…

Brief Explanations:

Mechanical weathering breaks rocks physically. Acid rain and carbon - dioxide are related to chemical weathering as they cause chemical reactions. Oxidation is also a chemical process. Animal actions like burrowing by rodents or root growth by plants can physically break rocks, which is mechanical weathering.

Answer:

C. animal actions